Narrow-ware loom



Jufiy 24, 1923.

E. R. HOLMES NARROW WARE LOOM Filed Jan. 17 1921 3 Sheets$heet 1 lllllllllL July 24, 1923.-

E. R. HOLMES NARROW WARE LOOM Filed Jan. 17 1 921 3 Sheets-Sheet 2 Jul 24, 1923.

E. R. HOLMES .NARROW WARE LOOM s Shets-Sheet '5 Filed Jan. 17. 1921 Patented .luly24t, 11923.

. innate ELIBRIDGE R. HOLMES, F WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMPTON 86 KNOWLES BOOM WORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

NARROW-WARE LOODE.

Application filed January 17, 1921.

To all whom it may concern.

Be it known that I, ELnninen R. HOLMES, a citizen of the United States, residing at WVorcester, in the county of "Worcester and State of Massachusetts, have invented a new and useful Narrow-V are Loom, of which the following is a specification.

This invention relates to a narrow ware loom and particularly to certain improve ments in the construction of the lay and of the shuttle driving mechanism.

It is customary in narrow ware looms to reciprocate a plurality of shuttles lon itudinally of the lay by means of a racr bar,

slidably mounted on the lay and regularly reciprocated thereon.

It is one object of my invention to improve the mechanism for actuating the rack bar in a narrow ware loom to the end that a more positive motion may be provided, a nd that lost-motion orslackness in any position may be eliminated.

A further object of my invention is to improve the lay construction by the provision of means for varying the angular position of the lay upon its support.

My invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims,

A preferred form of my inventlon is shown in the drawings, in which Fig. 1 is a front elevation of a portion of a narrow ware loom;

Fig. 2 is a sectional side elevation taken along the line 22 in Fig. 1;

Fig. 3 is a partial horizontal sectional view taken along the line 33 in Fig. 2;

Fig. at is an end view of the lay, partially 4.0 broken away;

Fig. 5 is a cross section of the lay, taken along the line 5-5 in Fig. 6;

Fig. 6 is a partial front view of the lay, taken partly in section on the line 6-6 of Fig. 5;

Fig. 7 is a plan view of parts of the mechanism for actuating the rack bar;

Fig. 8 is a sectional view taken along the line 88 of Fig. 7;

Fig. 9 is a detail view of certain connections in the actuating mechanism; and

Fig. 10 is a detail sectional view, taken along the line 1010 in Fig. 1, and on an enlarged scale.

Serial No. 437,693.

Referring to the drawings, 1 have shown certain parts of a narrow ware loom mounted on a frame comprising loom sides 20, a breast beam 21, girts 22 and 23, and intermediate cross-frames 2a. A lay 25 supports a plurality of shuttles 26 in the usual manner and is mounted to swing about a fixed axis near the base of the loom. Suit able connections (not shown) are provided between the lay 25 and a driving shaft 27 mounted in bearings at the back of the loom.

The lay is preferably supported upon swords formed in three parts and each comprising a pivotally mounted hub-portion 27 a bracket 28 secured to the lay, and an intermediate connecting portion 29. The parts 27 and 29 may have a bolt and slotconnection which permits vertical adjustment of the lay.

The upper end of the intermediate portion 29 is convex in shape, as shown in Fig. 2, and the under surface of the bracket 28 has a correspondingly concave surface. A bolt and slot connection is also provided between the parts 28 and 29, which permits angular adjustment of the brackets 28 and lay 25 upon the upper ends of the intermediate sword portions 29. By adjusting these parts the angular position of the reed and the position of the shuttle in the shed may be varied.

The rack bar 30 (Figs. 5 and 6) extends longitudinally of the lay, and is slidably held in position thereon by angle-irons 31. This rack bar engages the usual pinions 32 to operate the shuttles 26.

I have provided an improved construction for connecting the rack bar to its actuating mechanism, and for this purpose a plate 33 is secured to the under side of the rack bar near one end thereof, said plate being provided with a transverse dove-tailed guideway. A member 3% has a dove-tailed projection 35 fitting the guideway in the rack bar plate 33. The member 34 is riveted or otherwise secured to a thin metal band 36 extending across the lay 25. The member 34 and the free end of the band 36 are flexibly connected as by chains 37 to actuating mechanism to be described.

The rack bar 30 may be removed from the lay for cleaning or repair purposes, without disconnecting the chains or disturbing the adjustment of the actuating mechanism. It

is merely necessary to remove the angleirons31 and then slip the rack bar forward until the parts 33 and 35 are disengaged.

Each chain 37 passes around a guide-pul' ley or sprocket 38 mounted on a bracket 39 at the end of the lay and also around a guide-pulley or sprocket 40 mounted in a lower bracket 41. The lower brackets are mounted to swing about the axis of the lay, and preferably in fixed angular relation therewith. The lower surface of each guidepulley 10 is substantially in alignment with the axis of the lay. so that each chain 37 meets its guide-pulley substantially along the axial line of the lay.

Each chain 37 is preferably connected to a rod 42 and these rods 12 are connected to a block 43 through which the rods and chains are reciprocated. Turn-buckles 44- may be "provided for adjusting the lengths of the rods 12, and the longitudinal position of the rack bar,

The brackets 39 for the sprockets 38 are secured to the lay ends by bolts 15 exten ding through arcuate slots 46 which permit angular adjustment of the brackets to offset the angular adjustment of the sword brackets 28 upon the intermediate portions 29.

Each sprocket 38 may thus be placed in alignment with the point of connection of its chain 37 to one of the members 34; and also in alignment with its associated lower guide-pulley 10. The rods 42 extend within a pipe or tube 16 mounted for angular movement in bear ings 41-7 in the cross-members The hub portions 27 of two of the lay swords are preferably fixed to the ends of the tube 4:6 and engage the outer sides of the bearings 47 to prevent longitudinal movement of the tube.

The tube 16 is provided with a slot &8

along one side of its middle portion through which extends a stud 4-9. The stud 419 is provided with a head 50 (Figs. 8 and 9) and may be detachably secured to the block 43 by inserting the head 50 through an opening 51 in the block, and then turning the stud so that the head 50 stands transversely of the opening, as shown in Fig. 9.

The stud 19 is secured in a frame 51 slidable axially along the pipe, 16. The frame 51 is provided with upper and lower projections 52 engaged by fixed side plates 53 which prevent angular movement of the corresponding eccentric gear 61 driven from the crankshaft 27 The actuating rods 12 are preferably cen; tered in the pipe 16 by split wood bushings 62 10) secured in the tube ends. When these bushings become worn they are easily removed and replaced.

In connection with my improved detachable rack bar. I provide certain improvements in a smash prcventer of the general type shown in the prior patent to Ryon #884,614. issued April 1%, 1908. For this purpose I secure a bracket 63 to the rack bar 30 near one end thereof. Rolls 6 1 and 65 are pivotally mounted on the lower side of the bracket 63. The roll fit engages the protector mechanism, as fully described in said patent and the roll 65 engages the front side of the angle-iron 31. Any pressure on the roll 6-1 is thus transferred through the associated roll 65 to the angle-iron 31 fast on the lay. The rack bar is thus relieved of any strain caused by the protector mechanism.

I-Iavinp; described the construction of my improved loom, the operation and advan tages thereof are readily apparent. As the shaft 57 is rotated, the crank-roller 55 reciprocates the frame 51 along the pipe 416 and the reciprocating.motion is communicated through the stud 49 to the block 43 and thus through the rods 12 and chains 37 to the rack bar 30.

As the rods l2 are positioned substantially along the axis of the pipe 16, the swinging motion of the lay has nofeffect upon the connections to the rack bar, and there is no slackness or lostmotion in any position of the lay. Furthermore. the rigid metallic connection between the upper ends of the chains 37 eliminates changes in the connection due to the efiiect of weather conditions upon the wooden rack bar 30.

In the common type of narrow ware loom, a hunter or other similar device is required to accurately position the rack bar at the end of its stroke. My continuous metallic connections together with the axially disposed operating mechanism therefor, enalile me to omit such positioning; devices. This relieves thcmechanism of the sudd n strain arising when the movement of the rack bar is abruptly stop iied by the hunter.

Having thus described my invention it will be evident that changes and modifications can be made therein by those skilled in the art within the spirit andscope thereof as set forth in the claims and I do not wish to be otherwise limited to the details herein disclosed, but what I claim is 1. A narrow ware loom having in combination, a lay mounted to swing about a fixed axis, a rack bar mounted to slide longitudinally thereon, a member mounted forreciprocation along the axis of movement of the lay, and connections betweenisaid member and said bar, portions of said connections li t being substantially aligned with said axis and being movable along said axis.

2. A narrow ware loom having in combination, a lay mounted to swing about a fixed axis, a rack bar mounted to slide longitudinally thereon, a rod mounted to slide substantially along the axis of move ment of said lay, and flexible connections between said rod and said rack bar.

3. A narrow ware loom having in combination, a lay mounted to swing about a fixed axis, a rack bar mounted to slide longitudinally thereon, a rod mounted to slide substantially along the axis of movement of said lay, flexible connections between said rod and said rack bar, and guide pulleys for said flexible connect-ions having portions of their guiding surfaces substantially aligned with said axis.

4. In a narrow ware loom, in combination, a lay, a metal plate mounted to slide on said lay, a rack bar detachably secured to said plate, and means to reciprocate said plate and bar.

5. In a narrow ware loom, in combination, a lay, a metal plate mounted to slide on said lay, a rack bar detachably secured to said plate, means to reciprocate said plate and bar, said plate and bar having co-operating transverse dove-tailed projections and guideways, and means on said lay to hold said parts in assembled relation.

6. In a narrow ware loom, in combination, a lay, a plurality of supports for said lay, each support being formed in upper and lower parts, and means to secure said parts together in relatively adjusted angular position, whereby the angular position of the lay may be adjusted about an axis parallel to the axis of oscillation of the lay.

7. In a narrow ware loom, in combination, a lay, and a plurality of supports for said lay, said lay being angularly adjustable upon said supports, one portion of each support having an upper convex surface and another portion of each support having a lower concave surface, said portions being assembled with said convex and concave surfaces in engagement with each other.

8. In a narrow ware loom, a lay, a plurality of supports therefor, a rack bar mounted thereon, means to actuate said bar including flexible connections to said bar, guide-pulleys for said connections, and stands for said pulleys, said lay being angularly adjustable an said supports and said guide-pulley stands being angularly adjustable on said lay.

9. In a narrow ware loom, a lay, a rack bar slidable thereon, an actuating rod, flexible connections between said rod and said bar, and means to move said rod, said means comprising a slotted tubular shaft for said lay, a frame slidable on said shaft and having a transverse guideavay, fixed guides for said frame preventing angular movement thereof, a driven crank-shaft and a crank pin on said shaft operating in said guide-way to reciprocate said frame, said frame being connected to said actuating rod and said rod being slidably mounted in said shaft.

10. In a narrow ware loom, a lay, a rack bar slidable thereon, a plate detachably secured to said lay to hold said bar in position, a bracket fixed to said bar and extend ing forwardly, a roll on said bracket positioned to engage the protector mechanism of the loom, and a second roll on said bracket positioned to engage said plate when said bracket is pressed rearward.

11. In a narrow ware loom, a lay, a rack bar slidable thereon, a plate detachably se cured to said lay to hold said bar in position, a bracket fixed to said bar and extending forwardly, a roll on said bracket positioned to engage the protector mechanism of the loom, and means to transmit pressure on said bracket direct to said plate when said bracket is pressed rearward.

In testimony whereof I have hereunto affixed my signature.

ELBRID GE R. HOLMES. 

